Electric-arc lamp.



No. 7I2,947. Y Patented Nov. 4, |902.

L. C. H. MENSING. ELECTRIC ARC` LAI?. (Anplicntion med June 30, 1902.)

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- Patented Nov. 4, |902. L. C. H. MENSING. ELECTRIC ABC LAMP.

(Applicntion lod Juno 30, 1909.)

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UNITED STATES PATENT OFFICE.

LOUIS CARL HENRY MENSING, OF LONDON, ENGLAND.

ELECTRIC-ARC LAMP.

SPECIFICATON forming part of Letters Patent No. 712,947, dated November 4, 1902.

pplication filed T une 30, 1902. Serial No. 113,836. (No model.)

T CLU whom it may concern:

Be it known that 1, LoUIs CARL HENRY MENSING, a subject of the King of England, residing at 11 Queen Victoria street, London, England, have invented certain new and useful Improvements in lnclosed or Open Electric-Arc Lamps, of which the following is a specification.

The object of this invention is to construct lo braking and regulating appliances for inzo regulating appliance.

3o brake-wheel.

closed (or incandescent arc) or open .electric arc lamps in such a manner that the arc may be struck and maintained in a positive and eicient manner at all times.

My invention will be clearly understood from the following description, aided by the accompanying drawings, in which- Figure 1 is an elevation of suiflcient of an electric-arc lamp to show my braking and Fig. 2 is a front elevation and plan of the brake-wheel. Fig. 3 is a front elevation and plan of the plate having two of the gripping devices. Fig. t is a side elevation and plan of the plate which fits loosely in the plate shown at Fig. 3. Fig. 5 is a section through lines a a ofFig. 1. Fig. 6 is a section through line b b of Fig. 1. Fig. 7 shows side and front elevations of the rod carrying the snug for actuating the plates and Fig. 8 is a section of a globe and lower portion of a lamp.

For the purpose of my invention I journall the brake-wheel 1 or wheels 2 on an axle titted to one or more standards 3 and secure a plate 4 at one or both sides of said wheel, this plate 4 having arms 5 6 projecting over the periphery of the brake-wheel 1, one, two, or more, 6, being on one side and of a plain character, while the arm 5 on the other side carries a loose-tting plate 7, and also has hinged to it one end of a rod 8, which end carries a snug or projecting portion 9, having action upon the loose-fitting plate 7 or on the brake wheel or wheels 1 direct. The rod 8 is screw-threaded and adjustably connected to the actuating-lever 10, which is operated by the solenoid 11, so that when the solenoid 11 is moved by the rise or fall of the current it will through its lever actuate the thread- 5o ed rod 8, and consequently the snug or projection 9, which will release the brake-wheel 1, or by action on the loose plate 7 push the loose plate 7 onto the periphery of the brake wheel or wheels 1 and at the saine time will draw the plate 4 for the arms 6 to engage the brake-wheel 1 at the opposite side, the plate being slotted for the purpose, so that all three or more grip the brake-wheel 1 as a clutch and hold it firmly, the rocking motion given by the downward movement of the threaded rod 8 moving the brake-wheel 1 around to establish the arc or to feed the cai-bons 12 13 together Whenever the resistance of the aro increases.

By making the rod 8 adjustable as to length the degree of grip of the clutch can be determined, and consequently the length of the arc controlled accordingly, the movement of the carbons 12 13 being regulated by the clutch acting as a brake.

The lever 10, connecting the solenoid 11 with the threaded rod 8, is pivoted on the arms 3 and carries a weight 14, adjustable along its length, to balance the mechanism and insure prompt action and a positive downward movement of the solenoid, the weight being lixed in position by the screws 15.

W'hen the appliances are employed in a closed (or incandescent arc) or open electric arc lamp, the glass cylinder 15 can be secured to the framework 16 of the lamp and the top be provided with an asbestos packing 17, clamped in the metallic cover 18 and so made that a nearly air-tight joint is made when the upper carbon 12 is situate through the hole in the cover18, the bottom of the cylinder 15 being tightly socketed in apiece 19, which carries the carbon 13.

Instead of the adjustable threaded rod 8 being connected to the solenoid by a rocking arm 10 it may be connected direct, and the brake-wheel 1 may be reversed in its movement, or the snugs or projections 9 may be so arranged that the brake-Wheel 1 may be caused to travel in either direction.

As will be understood, the carbon-holding cords 20 21 pass down the tubes 26 27 and are secured Vto the brake-wheel, one in each groove 22 23, but wrapped in reverse direction, so that on the movement of the wheel 1 one cord will be given oi while the other is taken in, so that the carbons are moved lto IOO and from each other; but in some cases one carbon may be a fixture.

24 is a balance-weight litted on the rod 25 to counterbalance the weight 14.

What I claim, and desire to secure by Letters Patent, is-

1. In electric-arc lamps, the brake-wheel 1 carried in standards 3 and having connected therewith a plate 4 provided with arms 5 6 reaching over the periphery of said brakewheel 1, loose plate 7 arranged between the arms 5 and brake-wheel 1 adjustable rod 8 pivoted to arm 5 and carrying a snug or snugs 9 for actuating the plates 4 and 7 to grip the wheel 1, pivoted lever 10 connecting the adjustable rod 8 with the solenoid 11 to allow the movement of the solenoid to comm unicate its motion to the brake-Wheel 1 for actuating the carbons all arranged and operating substantially as and for the purpose set forth.

2. In electric-arc lamps a brake-wheel 1 provided with a sliding plate 4 having arms 5 6 projecting over the periphery of the brake- Wheel 1, loose plates 7 situate between the arm 5 and brake-wheel 1, adjustable rod 8 pivoted to arm 5, snug or snugs 9 projecting from rod 8 all arranged and acting substantially as and in the manner set forth for the purpose described.

In testimony whereofI have hereunto set my hand in presence of two subscribing witnesses.

LOUIS CARL HENRY MENSING.

Witnesses:

W. ARTHUR TAYLOR, HERBERT W. HARNESS. 

